Ice-cream freezer.



F. E. WHITNEY.

ICE CREAM FREEZER.

APPLICATION FILED JAN. 3. 1907.

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Patented Mar. 23, 1909.

WI'T' 155555 F E. WHITNEY. ICE CREAM FREEZER.

APPLIOATION IILED hum. 1907.

Patented Mar. 23, 1909. 2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

FRANK E. WHITNEY, OF MELROSE, MASSACHUSETTS.

ICE-CREAM FREEZER.

Specification of Letters Patent.

Patented. March 23-, 1909.

Application filed January 3, 1907. Serial No. 350,585.

To all whom it may concern:

. Be it known that l, FRANK E. WHITNEY, of Melrose, county of Middlesex and State of Massachusetts, have invented a new and beveled gear a which engages with the respective gears a", a. ihe gear a connects,

5 preferably by an integral connection, with a short, hollow, vertically-extending shaft a useful Improvementin Ice-Cream Freezers,

connection with a single source of motive power, the contents'of one tub being frozen while that of another is removed and made read tica y a continuous freezing operation.

My invention consists in various details of construction all of which can best be seen and understood by reference to the drawings, in which Figure 1 shows the machine mainly in side elevation. line 22 of Fig. 1.

whic there extends upwardly and vertically a short, thick shaft 0 Mounted upon the top of the standard A is a laterally-swinging, rotatable frame A having branching arms which turns within a bearing (L15 on the end of the arm a. The gear a is maintained in proper position to engage witlrt-he gear a. by the body thereof engaging with the under side of the bearing a and by means, also, of

E the collar 11" upon the ulpper end of the hollow shaft (1, which co ar rests and turns uponthe top of the same bearing.

T he beve ed gear a is arranged upon the 5 upper end of a hollow, vertically-extending,

fol-freezing, thereby obtaining pracarm a.

Fig. 2 is a cross section on the i Fig. 3 shows in detail a vertical section of a portion of the machine to which support the operating mechanism, as E P the shaft a admitting, also, of the sliding will hereinafter be described. The swinging frame A maintains a rotatable bearing upon the end of the standard A by its annular bottom edge a resting upon the annular top edge a of the standard and by means, also, of a short, internal sleeve a vertically inturned from the edge (1. of the frame and adapted to embrace the shaft (1 of the standard. frame A? is provided with the forward and backwardly' extending arms a, a.

tubular shaft a" which turns within a hearing a formed in the end of the supporting The arrangement of this gear upon the end of the shaft a" is such that the body of the gear will rest upon the top of the bearing, whereby the gear is maintained in proper operative engagement with the gear a. Vithin the hollow shaft a" is contained'an auxiliary hollow shaft a, the bottom end of which is enlarged to form a squared cavity (1 by which the bottom end of the hollow shaft. by the squared cavity therein, may engage with a boss 0, similarly squared, upon the covers of both the cans C contained within the tubs B and B The auxiliary shaft a is loosely arranged within the hollow shaft 0. either to slide vertically or turn laterally therein. T he auxiliary shaft serves the purpose of connecting the shaft a with the can cover as aforesaid, by which the shaft a" may turn the can. As a means for connecting the two shafts, by which the motion of the shaft a" may be transmitted to adjustment of the shaft a to and from the can cover, there projects from the side of the shaft a a pin (L which works within a vertically-extending slot (1 and offset slots a, a formed in the shaft a". It is obvious E that by properly turning the shaft a within The 5 the shaft a" the pin a may be made to i enter the slot 0/ when the shaft a inav be From the arm a. there branches upwardly an arm a", the arm (17 forming practically a continuation of the arnra. On the end of the arm a" is formed a bearing a and bet ween the arms a".and a is formed a bearing a. fhese bearings are in horizontal alinement with one another and in them is journaled a shaft a carrying on its end beyond the bearing a, the

madeto vertically slide within the shaft a" and accordingly be made to engage with or be lifted from the cover of the freezing can.

The arrangement of the offset slot (1 is such that when engageu'ient is made with the freezing can, then upon lateral motion imparted to the shaft a its pin a will slip into said offset slot by which the auxiliary shaft will be held in positive engagement with the can cover and be connected also with the, shaft a to receive the motion thereof.

slot a is adapted to receive the pin after the gear a and its hollow supporting shaft is a rod a. This rod extends vertically also through the gear (1 and auxiliary shaft a inside the shaft a, supporting said gear. The shaft (1, is splined to the gear a and its supporting shaft, to slide vertically therein and be turned rotatably thereby. The bottom end of the shaft is cleft by. a slot by which the shaft may engage with a projection 0 on the end of the shaft 0 which connects with the dasher on the inside of each freezing can, whereby said shaft when rotated may operate to turn the dasher. By reason of its sliding maintenance, the shaft a may be let down to operatively connect with the dasher, orlifted into a position'of disengagement therefrom. The means provided for so engaging the shaft 0 comprises an angular lever 11 pivoted to a bracket a j carried by the swiveling frame A The arranged on the side of the bearing a formed, as before described, on the end of the arm a of the frame. This lever has a handle a and a'slotted arm a which engages with or receives a pin a on the side of the collar a loosely arranged on the end of thehshaft (L25 and movable vertically there'- wit r 4 r The slots in the arm a receiving the pin a, consist of a slot a and slots a, 0, reversely oil'set therefrom at either end thereof. When the rod 0. is in operative engagement with the end of the dasher rod, the pin a is contained within the slot a of the ever arm which by reason of the angular disposition of the lever .arm holds the rod 100 ed'in such position. Upon raising the arm by turning the lever it will draw away from the pin until the pin encounters the under side of the slot a As the turning of the lever is continued the arm will sli over the pin along the under side of the slot (1 and the rod (1 becomelifted. This action continues until the rod (1 has been lifted into a proper position of disengagement with the dasher rod when the pin will sli into the offset slot (1 and the rod 0/ be he d in such position of disengagement. vUpon moving the lever in a reverse direction by lowering the slotted arm thereof, said arm will first draw away from the pin in the of? set slot at by which the pin on the rod 0. is released. Then as the turning of the lever is continued the slotted arm will run over the pin (1 along the under side of the slot a, per- The 1 mitting the rod (1 to drop until it engages with the end of the dasher rod when the pin is again contained in the slot (0 and the rod becomes locked in a position of engagement as before described.

The operation of the parts above described is briefly as follows :Assuming that the rod a has been let down into operative engage ment with the end of the dasher rod of oneof the cans and the auxiliary shaft 0, let

down to engage with the can, as before described, then upon the application of power to the shaft a" the rotary movement thereof will be transmitted through the beveledgear a to the gears a and a, respectively, by which said gears are turned in reverse directions. The geara being splinedtothe-rod a connected with the dasher end of the freezing can will accordingly turn said rodand dasher. The gear a 'at the same time turning in a reverse direction will through the shaft (1 7, on which it is mounted, and pin a, transmit its motion to the auxiliary shaft (1- engaging with the cover of the can, which accordingly is turned simultaneouslywith the dasher; but in a reverse direction. For turning the dasher 02 and consequently through the train of connecting mechanism, operating the can and the dasher there is provided a motor D which is mounted upon a table d motor connects with the shaft a by a chain of gears (Z d 11 and d.

The swinging frame A is maintained or locked in proper position for the mechanism carried by the frame to connect with the parts to be operated in the following manner:

ivoted to a lug f on the side of the standard A is a spring-pressed latch f. This latch is provided with an engaging arm which when the frame has been swung to such proper position that the mechanism carried by the frame may connect with the parts to be operated as aforesaid, is adapted to automatically slip into one or the other of the slots f formed in a rib f 3 on the base of the swin ing frame. The latch is released in the usua manner simply by turning it and lifting its engaging arm.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States:.

1. In an ice-cream freezing machine of the character specified, a rod 'rotatably driven adapted to connect with one of the parts to be operated and to be movable into a position of engagement or disengagement with respect to said part, a member loosely connecting with said rod and movable vertically therewith, and a pivoted arm having therein slots reversely arranged and an ed e intermediate said slots adapted to drav under character specified, a rod rotatably driven lever having a slotted arm with the slots a, adapted to connect with one of the parts to a, and a" for receiving said pin, substantially be operated and to be movable into a posi- I as described.

tion of engagement or disengagement with respect to said part, a collar loosely arranged l Witnesses: upon said rod and movable vertically therei W. A. LISTER, with, a pin projecting from said collar, and a 1 HELEN S. DYER.

FRANK E. WHITNEY. 

